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Table 1 Diagnosis criteria and ICD-9-CM and ICD-10-CM codes used to determine computed and recorded diagnoses

From: Temporal relationship of computed and structured diagnoses in electronic health record data

Condition Signal and diagnosis criteria
Hypertension Denominator: Outpatient systolic ≥ 140 or diastolic ≥ 90 (mmHg)
 2 readings ≥ 30 days apart and no prior diagnosis
Numerator: New diagnosis of any of the following
 ICD-9 groups: 401, 402, 403, 404, 405, 642
 ICD-10 groups: I10, I11, I12, I13, I15, I16, I27, O13
Diabetes Denominator: A1c ≥ 6.5 (%)
 2 readings ≥ 30 days apart and no prior diagnosis
Numerator: New diagnosis of any of the following
 ICD-9 groups: 249, 250
 ICD-10 groups: E08, E09, E10, E11, E13
Hyperlipidemia Denominator: LDL ≥ 130 (mg/dL)
 2 readings ≥30 days apart and no prior diagnosis
Numerator: New diagnosis of any of the following
 ICD-9: 272.0, 272.2, 272.3, 272.4, 272.9
 ICD-10: E78.0, E78.2, E78.3, E78.4, E78.5, E78.7, E78.8, E78.9
  1. ICD-9-CM International Classification of Diseases, Ninth Revision, Clinical Modification, ICD-10-CM International Classification of Diseases, Tenth Revision, Clinical Modification, LDL Low-density lipoprotein cholesterol
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